Microsoft.com Download Page
http://www.microsoft.com/downloads/details.aspx?FamilyId=5C080096-F3A0-4CE4-8830-1489D0215877&displaylang=en

Bits
http://download.microsoft.com/download/5/1/1/511bc547-dda7-4803-9e32-5f8202c0ef52/Visual Studio 2005 Extensions for Windows Workflow Foundation Beta 2_2(EN).exe

Install Guide
http://download.microsoft.com/download/1/5/8/15821942-BEE0-4828-BF64-2080D1A239C9/WFBeta2.2_Install_Instructions.htm 

VS Extensions Release Notes
http://download.microsoft.com/download/E/A/8/EA877B6E-09D6-4E20-B055-FCA48338080D/VS2005Extensions_for_WF_Beta2.2_Readme.htm

Runtime Release Notes
http://download.microsoft.com/download/E/A/8/EA877B6E-09D6-4E20-B055-FCA48338080D/WF_Beta2.2_Readme.htm